(b) Isn't here a member from Hellas (Elli)? I've always thought she is participating to some extend in one of the local groups there. My research this evening reveals, that there is a virtual meeting every week which is launched by the Garden of Athens. The Garden of Thessaloniki seems to be currently inactive but on their website is a wide range of materials (ironically, the website looks technically much more modern than the Athens equivalent). Unfortunately it's hard to come to any conclusion on their concrete understanding of Epicurean philosophy.
(c) I will try to make some change in the text I have linked and look forward to present first results during the next days.